Dear all, Attached you will find a slide-set describing some basic NSA interaction models, as it has been commented on the last call conferences. Please feel free to comment on them. All the best, -- Joan A. Garcia-Espin Network Technologies Cluster (CTX) i2CAT Foundation C/ Gran Capità 2-4, office 203, Nexus I building 08034 Barcelona, Catalonia (Spain) T: +34 93 553 2518 F: +34 93 553 2520